August 2010
The Office of Transport Safety Investigations (OTSI) in Sydney, Australia, has published a report on bus wheel separation. A bus carrying 79 students on their way home from school suddenly lost both of its rear wheels. The bus had undergone repairs, during which the rear wheels on both sides were removed and replaced. The wheels were fitted to the bus without undergoing a final re-tensioning sequence, and after 42 days, or 2,540 kilometres travelled, the wheel nuts came loose and detached.
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